Patents Represented by Attorney David M. Bunnell

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  • Hydrocarbon solutions of alkylaluminoxane compounds
    Patent number: 5066631
    Abstract: A hydrocarbon solvent solution of alkylaluminoxane comprises a hydrocarbon solvent having dissolved therein methylaluminoxane and an effective amount to solubilize the methylaluminoxane in the solvent of tri-n-alkylaluminum wherein the alkyl groups each contain at least two carbon atoms.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: November 19, 1991
    Assignee: Ethyl Corporation
    Inventors: Samuel A. Sangokoya, Milham S. Howie, Todd A. Trumbo
  • Preparation of alpha-olefin by ethenolysis
    Patent number: 5055628
    Abstract: Alpha-olefin is prepared from internal and/or vinylidene olefin by reacting the internal and/or vinylidene olefin with ethylene in the presence of a catalyst consisting essentially of Re.sub.2 O.sub.7 and B.sub.2 O.sub.3 on Al.sub.2 O.sub.3.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: October 8, 1991
    Assignee: Ethyl Corporation
    Inventors: Ronny W. Lin, Marshall B. Nelson, Bruce C. Peters
  • Ethylene chain growth process
    Patent number: 5049687
    Abstract: An improved ethylene chain growth process in which ethylene and an alkyl aluminum compound are mixed and fed into an externally cooled, tubular coil reactor where said mixture is reacted at elevated temperature and pressure so as to form tri-C.sub.2 -C.sub.20+ alkyl aluminum compounds the improvement comprising reducing the rate of reactor fouling by precooling the ethylene to a temperature of from about 30.degree. to 70.degree. C. prior to mixing it with the alkyl aluminum compound.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: September 17, 1991
    Assignee: Ethyl Corporation
    Inventor: Armen N. Abazajian
  • Fuel compositions containing phenolic antioxidants
    Patent number: 5045089
    Abstract: Fuel compositions contain a liquid, partially-sulfurized, hindered phenol antioxidant composition prepared by reacting a liquid mixture of phenols which contains at least 50 weight percent of one or more reactive hindered phenols with sulfur monochloride in proportions to provide from about 0.3 to 0.7 gram atoms of sulfur monochloride per mole of reactive, hindered phenol.
    Type: Grant
    Filed: December 3, 1990
    Date of Patent: September 3, 1991
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: William Y. Lam, Gregory P. Liesen
  • Preparation of aluminoxanes
    Patent number: 5041583
    Abstract: Hydrocarbylaluminoxanes such as methylaluminoxanes are prepared by reacting a hydrocarbylaluminum compound with a hydrate of an alkali or alkaline earth metal hydroxide.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: August 20, 1991
    Assignee: Ethyl Corporation
    Inventor: Samuel A. Sangokoya
  • Phase transfer catalyst recovery
    Patent number: 5030757
    Abstract: A quaternary ammonium salt catalyst is recovered from mixtures where the salt is in contact with an aqueous alkaline phase by adding water to completely dissolve the salt and adding base to cause the dissolved catalyst to separate as a hydroxide which forms an oily upper phase.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: July 9, 1991
    Assignee: Ethyl Corporation
    Inventor: Bruce C. Berris
  • Lubricating oil composition
    Patent number: 5028345
    Abstract: Lubricant compositions comprising an oil of lubricating viscosity and a cosulfurized blend of (a) a carboxylic acid ester material and (b) an ester, amide, ester-amide or fatty amine derivative which contains at least one polar substituent group such as amino and hydroxyl.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: July 2, 1991
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi
  • Reduced ash content lubricants
    Patent number: 5026493
    Abstract: A reduced metal content lubricant contains the reaction product of a phosphosulfurized polyalkene and an amine, a polyalkene substituted phenol, and, optionally, a polyalkene sulfonate.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: June 25, 1991
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: William Y. Lam, David L. Wooton
  • Process for preparing transition metal cyclopentadienyl carbonyl compounds
    Patent number: 5026885
    Abstract: Transition metal cyclopentadienyl carbonyl compounds of the formula:[R.sub.x C.sub.p M(CO).sub.y ].sub.nwherein R is hydrocarbyl, C.sub.p is cyclopentadienyl, M is a transition metal, x is 0 or an integer from 1 to 5, y is an interger from 1 to 7, provided that when x is 2 to 5, R can represent two or more different hydrocarbyl groups and any two R groups can together form a fused ring with the cyclopentadienyl moiety, and n is 1 or 2,are prepared in one step by carbonylating a mixture of (i) a transition metal salt of an organic carboxylic acid a .beta.-diketone, or a .beta.-keto ester (ii) a cyclopentadiene compound (iii) and a metal alkyl reducing agent.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: June 25, 1991
    Assignee: Ethyl Corporation
    Inventors: Donald R. Bell, Bruce C. Berris
  • Alkenyl succinic anhydrides process
    Patent number: 5021169
    Abstract: Alkenyl succinic anhydrides having a decreased amount of tar and color bodies are made by the reaction of an olefin with maleic anhydride in the presence of a tri-orthoalkylphenyl phosphite and optionally a hindered phenolic antioxidant such as 2,4,6-tri-(3,5-di-tert-butyl-4-hydroxybenzyl) mesitylene.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: June 4, 1991
    Assignee: Ethyl Corporation
    Inventors: Kju H. Shin, Paul S. Hale
  • Phenolic antioxidant composition
    Patent number: 5009802
    Abstract: A partially sulfurized, phenolic antioxidant having good copper corrosion properties is prepared by reacting a liquid mixture of phenols, which mixtures includes at least one reactive, hindered phenol, with sulfur chloride in proportions to provide from about 0.3 to 0.7 gram atoms of sulfur per mole of reactive phenol.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: April 23, 1991
    Assignee: Ethyl Corporation
    Inventors: William Y. Lam, Gregory P. Liesen
  • Fuel compositions containing sulfur-bridged phenolic antioxidants
    Patent number: 5004481
    Abstract: Fuel compositions contain a liquid, sulfur-bridged, hindered phenol antioxidant composition prepared by reacting a mixture of hindered phenols with a sulfur chloride in the presence of a polar modifier.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: April 2, 1991
    Assignee: Ethyl Corporation
    Inventors: William Y. Lam, Gregory P. Liesen
  • Process for preparing methylaluminoxanes
    Patent number: 5003095
    Abstract: Alkylaluminoxanes having 2 or more carbons in the alkyl group are reacted with a methyl halide using a bismuth containing catalysts to form methylaluminoxane by alkyl group exchange.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: March 26, 1991
    Assignee: Ethyl Corporation
    Inventor: William R. Beard
  • BF.sub.3 removal from BF.sub.3 catalyzed olefin oligomer
    Patent number: 4981578
    Abstract: BF.sub.3 is removed from a promoted BF.sub.3 catalyzed olefin oligomer reaction product by contacting the reaction product with either solid or aqueous KF to form a solid KBF.sub.4 precipitate. Solid NaF or NH.sub.4 F can also be used.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: January 1, 1991
    Assignee: Ethyl Corporation
    Inventors: Lindsay T. Tycer, Everett M. Marlett
  • Oil soluble sulfurized olefins and two temperature zone process for their preparation
    Patent number: 4966720
    Abstract: Sulfurized olefins such as isobutylene which are soluble in hydrotreated oils are prepared by reacting a basic, aqueous alcoholic solution of sodium sulfide with an adduct formed by adding olefin to sulfur monochloride at low temperatures until the mole ratio of olefin to sulfur monochloride is between about 1.7-1.9 to 1.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: October 30, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: David J. DeGonia, Paul G. Griffin
  • Lubricating oil composition
    Patent number: 4960530
    Abstract: Engine wear and sludge are reduced by using in the engine crankcase a fomulated motor oil containing a small amount of a cosulfurized blend of a carboxylic acid ester material and a fatty acid oxyalkylated amine derivative selected from fatty acid amides, fatty acid esters, and fatty acid ester-amides of said oxyalkylated amine and mixtures thereof.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: October 2, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi
  • Lubricating oil composition
    Patent number: 4960528
    Abstract: Engine wear and sludge are reduced by using in the engine crankcase a formulated motor oil containing a small amount of the combination of (i) an overbased alkaline earth metal sulfonate having a total base number of at least 100, (ii) a zinc dihydrocarbyl dithiophosphate, (iii) a sulfurized carboxylic acid ester, and (iv) a sulfurized fatty acid amide, ester or ester-amide of an oxyalkylated amine or mixtures thereof.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: October 2, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Armgard K. Everett, Edmund F. Perozzi
  • Lubricant compositions
    Patent number: 4957643
    Abstract: Compounds having the formula: ##STR1## wherein: a. R is an organic radical selected from an alkyl group, an alkenyl group, an aryl group or an aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms;b. R.sup.1 is hydrogen or an organic radical selected from an alkyl group or alkenyl group, an aryl or aralkyl group in which the alkyl or alkenyl groups contain up to 32 carbon atoms and the aryl or aralkyl groups contain up to 15 carbon atoms; and,R.sup.2 and R.sup.3 are the same or different alkyl groups containing from 1 to 32, more preferably 4 to 8, carbon atoms eachare effective antiwear and antioxidant additives in lubricating oil.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: September 18, 1990
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventor: William Y. Lam
  • Recovery of BF.sub.3 from olefin oligomer process
    Patent number: 4956513
    Abstract: A process for recovering BF.sub.3 from a BF.sub.3 -promoter catalyzed .alpha.-olefin oligomerization process is disclosed wherein the oligomer reaction product is water washed to extract BF.sub.3 as its hydrate and any water soluble promoter and the water extract is distilled to remove components boiling below BF.sub.3 hydrate overhead leaving a residual product which is at least 50 weight percent BF.sub.3 in the form of BF.sub.3 hydrate.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: September 11, 1990
    Assignee: Ethyl Corporation
    Inventors: Howard W. Walker, Ronny W. Lin
  • Trimethylaluminum process
    Patent number: 4948906
    Abstract: Trimethylaluminum is made by reacting a methyl halide with a tri-C.sub.2+ alkylaluminum, e.g. triethylaluminum, in the presence of a catalyst form by reacting bismuth metal with an alkylaluminum compound, e.g. trialkylaluminum, and an alkyl halide.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: August 14, 1990
    Assignee: Ethyl Corporation
    Inventor: William R. Beard